Mold.



W. N. BRITTO'N.

MOLD.

APPLICATION FILED DEG.30, 1911.

Patented Mar. 30, 1915..

2 SHEETSSHEET 1.

Fig.1.

INVE/VTDR W. N BRITTON.-

MOLD.

APPLICATION FILED DEC. 30, 1911.

1A fgfi; Patented Mar. 30, 1915.

2 SHEETS-SHEET 2.

a 4 l5 F m z /a Q HGYL IV/A WITNESSES: 41-9 4-6 l/l/I/E/VTOR i t a l it .4 a

LIES N. BRITTON, OF ROCHESTER, NEW YORK.

MOLD.

Specification of Letters Patent. Pafljqgntqgdl M 3% flpmg Application filed December 30, 1911. Serial No. 668,682.

To all whom it may concern Be it known that I, WILLIS N. Bnrrron, of Rochester, in the county of Monroe and State of New York, have invented a new and useful Improvement in Molds, which improvement is fully set forth in the following specification and shown in the accompanying drawings.

The Pmsent ention relates to molds and more particularly to the type employed for building plastic or concrete walls in situ.

An object of the invention is to provide a simple and inexpensive means for bracing the inner face-forming members of a mold against movement toward each other during the tamping or packing of the plastic or concrete mixture.

Another object of the invention is to provide a bracing means which is so connected to the operating means of the inner and outer face-forming members so that it will be actuated by said operating means.

To these and other ends the invention consists in certain parts and combinations of parts all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings: Figure 1 is a top view of a mold constructed in accordance with this invention; Fig. 2 is a longitudinal section on the line wa Fig. 1; Fig. 3 is a transverse vertical section on the line b-b Fig. 1, showing the mold in position for receiving the plastic material; Fig. 4 is a View similar to Fig. 3' showing the mold expanded; and Fig. 5 is an end view of the mold.

in carrying out this invention there is preferably employed two relatively movable parts comprising outer face-forming membore 1 and 1 each having respectively angular or L-shaped pieces 2 and 2 at their ends, adjustably secured by bolts 3 to two pairs of cooperating slides 4 and 5, one arranged above the other and both being arranged horizontally above the effective surfaces of the face-forming members. The slides are held together by bolts 6 which operate in slots 7, and plates 8 cover the slots 7 of the uppermost members to prevent the entrance of concrete into the slots.

For the purpose of forming a hollow between the taceforming members. 1 and 1, a hollow-formin device is provided comprising preferab y two inner face-forming members indicated at 9 and 9. One of these face-forming members is adjustably supported from the slide 4: by means of l.- shaped arms 10 which are held to the slide by bolts 11, while the other face-forming member 9 is detachably secured to the slide bar 5 by means of L-shaped arms l0 held by bolts 11.

' An operating means for the mold may comprise two toggles each having a link 12 pivoted at 13 to one of the slides 3, and

a link 14: pivoted to the swinging end of the link 12 at 15 and to the slide 4 at 16, the swinging end of the links 14 being connected by the U-shaped member 17 which serves as an operating-means for making and breaking the toggles. The pivots 15 are adapted to be swung below the plane of the pivots 13 and 16 so that the toggles serve to lock the member's 4 and 5 against movement when the mold is being-used.

For the purpose of bracing the inner faceforming members 9 and 9 against movement toward each other during the molding operation, a bracing means is provided comprisingpreferably lugs or shoulders 18 projecting from the inner sides of the members 9 and 9 said lugs extending from one of the members 9 or 9 toward and in a horizontal plane with the lugs on the other of said members and preferably being arranged in two diflerent horizontal planes. For cooperation with these lug bars 19 may be employed, connected together by connectors 20 which hold said bars in spaced parallel relation, each for cooperation with one of the sets of lugs 18, the cooperation being such that, when the bars are lowered vertically into the horizontal planes of the lugs 18, said lugs engage the bars and prevent the movement of the face-forming members 9 and 9 toward each other, but, when the bars 19 are raised from between the lugs 18, the

-members 9 and 9 may bemoved toward each other. The bars 19 at all times operate between the members 9 and 9* and are therefore invisible. Thev are of simple construction, being not only inexpensive to manufacture but are durable and not liable to get out of order.

The bracing means is preferably actuated by the operating means of the mold, the actuation taking place at the first part of the opening of the mold and at the final part of the closing movementof the mold. Preferably, the vertically movable brace is connected by links 21 to the operating means,

the links being pivoted at 22 to the ends of the upper bar 19 and at 23 to the links 12, so that, on the lowering of the links 12 to close the mold, the brace will be lowered and, upon the raising of the links 12 the operate with the outer face of the wall 46.

The molding chambers .of the mold are now filled with concrete which is tamped in any suitable manner within the mold. The operating member 17 is then raised, thus moving the face-forming members 1 and 1*? in parallel lines away from the outer faces of the formed Wall and moving the members 9 and 9 in parallel lines toward each other away from the walls of the hollow 49. During the tamping, the'bracing bars 19 lie between the lugs 18 so, that the members 9 and 9 arefirmly held against relative move-- ment, but, with the raising of the links 12, the bars 19 are raised, permitting the members 9 and 9 to move toward each other.

What I claim as my invention and desire to secure by Letters Patent, is:

1. A mold comprising a pair of outer face forming members mounted for relative movement toward and from each other, a 'pair of inner face forming members mounted for relative movement toward and from each other, a brace arranged to operate between the inner face forming members, and a common operating member for efiecting the relative movement of the outer face forming members and for effecting the movement of said brace.

2. A mold comprising a pair of outer face forming members mounted for relative movement toward and from each other, a pair of inner face forming members mounted for relative movement toward and from each other, a plurality of toggles connecting the outer face forming members to effect the relative movement, and a brace suspended from thetoggles and operating between the inner face forming members to prevent the relative movement of the latter.

3. A mold comprising apair ofouter faceforming members, a pair of inner face-forming members, means for simultaneously moving said outer face-forming members'toward and from each other and for moving said inner face-forming members toward or from each other, and bracing means for the inner face-forming members operated with said first-named means.

. 4. A mold comprising two relatively movable parts, each carrying an outer faceforming member and an inner face-forming member, the inner face-forming member of one part being positioned between the inner and the outer face-forming member of the other part, bracing means positioned between the two inner face-forming members, and means for moving the two parts relatively to each other, connected to the bracing means for actuating the latter.

5. A mold comprising two relatively movable parts, each carrying an outer faceforming member and an inner face-forming member, the inner face-forming member of one part lying between the inner and the outer face-forming member of the other part, bracing means positioned between the inner face-forming members, and toggles for moving the two parts relatively to each other, connected to the bracing means. 7

6. A mold comprising two relatively mow able parts, each carrying an outer faceforming member, and an inner face-forming member, the inner face-forming member of one part lying between the inner and the outer face-forming member of the other part, a vertical movable bracepositioned between the inner face-forming members, horizontally arranged 'toggles connecting the two parts for moving the latter, and links connected to the toggles and to the brace for moving the latter.

\VILLIS N. BRITTON. Witnesses:

H. H. SIMMS, ADA M. WHITMORE. 

